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  1. #1
    Join Date
    Aug 2016
    Posts
    3

    EDM wrong direction of eroding, no voltage

    Hello.
    I have EDM sinker SURE FIRST, ZPNC 408, 2014.
    For a few days in auto mode, when i start eroding, Z axis is moving up against down, and there is no voltage on electrode.
    In manual mode everything is fine, z axis moving correctly in both dierection. Finding Z working good.
    After pressing start, can be heard generator is working, all fans, etc.
    I checked all fuses, wires, cards, capacitorsand others It looks right, no damages.
    I am looking for some solution for this problem.
    Thanks

  2. #2
    Join Date
    Mar 2016
    Posts
    322

    Re: EDM wrong direction of eroding, no voltage

    Did You input eroding depth with "- " sign?

  3. #3
    Join Date
    Aug 2016
    Posts
    3

    Re: EDM wrong direction of eroding, no voltage

    oczywiście

  4. #4
    Join Date
    Mar 2016
    Posts
    322

    Re: EDM wrong direction of eroding, no voltage

    So try to input it without. IT can be interpreted as depth not as coordinates.

  5. #5
    Join Date
    Aug 2016
    Posts
    3

    Re: EDM wrong direction of eroding, no voltage

    I tried to change direction of eroding and jump etc, but the problem is not in the computer settings, it's working right.
    I suppouse, that there is something like broken relay or diode or just something easier, but hard to find. I was reading all electrical diagrams in maual, and one by one i checked all parts with gauge. Everything looks right. I wonder what it could be.right now.. Maybe some dust or cold soldering, but this machines has only one and half year.

  6. #6
    Join Date
    Mar 2016
    Posts
    322

    Re: EDM wrong direction of eroding, no voltage

    Check if the table is not connected with any part of cover. (it should be isoleted from chasis).
    If not check if there is a circuit between big wire connected to electrode and table.. It seems that You may have short circuit in high amperage line.

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